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Measurement of G_E_p/G_M_p in ep → ep to Q^2 = 5.6 GeV^2

Gayou, O. and Gao, J. (2002) Measurement of G_E_p/G_M_p in ep → ep to Q^2 = 5.6 GeV^2. Physical Review Letters, 88 (9). Art. No. 092301. ISSN 0031-9007. https://resolver.caltech.edu/CaltechAUTHORS:20140304-141858105

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Abstract

The ratio of the electric and magnetic form factors of the proton G_E_p/G_M_p , which is an image of its charge and magnetization distributions, was measured at the Thomas Jefferson National Accelerator Facility (JLab) using the recoil polarization technique. The ratio of the form factors is directly proportional to the ratio of the transverse to longitudinal components of the polarization of the recoil proton in the elastic ep → ep reaction. The new data presented span the range 3.5 < Q^2 < 5.6 GeV^2 and are well described by a linear Q^2 fit. Also, the ratio √Q^2 F_2_p/F_1_p reaches a constant value above Q^2 = 2 GeV^2.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://arxiv.org/abs/nucl-ex/0111010arXivDiscussion Paper
http://dx.doi.org/10.1103/PhysRevLett.88.092301DOIArticle
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.88.092301PublisherArticle
Additional Information:© 2002 The American Physical Society. Received 15 November 2001; published 12 February 2002. The Collaboration thanks the Hall A technical staff and the Jefferson Lab Accelerator Division for their outstanding support during the experiment. The Southern Universities Research Association (SURA) operates the Thomas Jefferson National Accelerator Facility for the United States Department of Energy under Contract No. DEAC05-84ER40150. This work was also supported by the U.S. National Science Foundation and Department of Energy, the Italian Istituto Nazionale di Fisica Nucleare (INFN), the French Commissariat à l’Energie Atomique (CEA) and Centre National de la Recherche Scientifique (CNRS-IN2P3), the Natural Sciences and Engineering Research Council of Canada (NSERC), the EEC Grants No. INTAS 99-00125 for the Kharkov Institute of Physics and Technology, and No. CRDF UP2-2271, and the Swedish Natural Science Research Council.
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DEAC05-84ER40150
NSFUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
Italian Istituto Nazionale di Fisica Nucleare (INFN)UNSPECIFIED
French Commissariat à l’Energie Atomique (CEA)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS-IN2P3)UNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
EECINTAS 99-00125
EECCRDF UP2-2271
Swedish Natural Science Research CouncilUNSPECIFIED
Issue or Number:9
Classification Code:PACS: 25.30.Bf, 13.40.Gp, 14.20.Dh, 24.85.+p
Record Number:CaltechAUTHORS:20140304-141858105
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140304-141858105
Official Citation: Measurement of G_E_p/G_M_p in ep → ep to Q^2 = 5.6 GeV^2 O. Gayou et al. ((Jefferson Lab Hall A Collaboration)) Phys. Rev. Lett. 88, 092301 (2002) – Published 12 February 2002
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44130
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:04 Mar 2014 23:15
Last Modified:03 Oct 2019 06:14

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